What do commercial & industrial rooflights involve?
Across Cumbria, our commercial & industrial rooflights work covers rooflights for warehouses, schools, offices and retail units. Survey first, fixed price second, fitting third.
Converted mills and warehouses in the North West often have large rooflights or glass roofs that need specialist replacement. Exposed hillside towns in the North West need flashing and seal details that cope with wind-driven rain.
Towns in Cumbria
Options we can specify
- GRP or polycarbonate in-plane rooflight sheets
- Modular glass rooflights
- Smoke and natural ventilation vents
- Continuous barrel-vault rooflights
- Polycarbonate domes
- Planned around working sites
- Replacement of discoloured or fragile sheets
Planning and building rules in England
On commercial roofs the main questions are usually building control, fire classification of rooflight materials and safe access rather than householder permitted development. Product data for building control is supplied with every quote.
For buildings other than dwellings, Approved Document L Volume 2 sets limiting U-values of 2.2 W/m²K for rooflights and 3.0 W/m²K for roof ventilators, including smoke vents. Fragile-roof safety and access are planned before work starts.
Guide prices
These are typical supply-and-fit ranges. For an address in Cumbria, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Barrel-vault or modular glass rooflight | £3,595 – £8,395 | £2,995 – £6,995 |
| Commercial flat-glass rooflight Typical | £1,795 – £3,595 | £1,495 – £2,995 |
| Dome or in-plane sheet replacement | £1,075 – £1,795 | £895 – £1,495 |
How the job runs
- Tell us about the roof. Send the postcode, rough sizes and a photo or two through the form, WhatsApp or the guide-price tool.
- Free survey. For new installations a surveyor measures the opening, checks the roof build-up and talks through glass and options.
- Fixed written quote. You get the product, the work and the price in writing. Nothing is ordered or paid for until you agree.
- Fitting and handover. We fit, seal and make good, then hand over product data, warranties and any certificate paperwork.
Commercial rooflights in nearby areas
Common questions
Can rooflights double as smoke vents?
Some units are certified smoke ventilators. See our smoke-vent rooflights page.
Are old rooflights a safety risk?
Older plastic rooflight sheets can become brittle. Anyone working on the roof must treat them as fragile unless proven otherwise.
Can you replace old warehouse rooflight sheets?
Yes. We match the roof profile, replace discoloured or damaged sheets and plan safe access while the building stays in use.
Do you work out of hours?
For occupied buildings we can plan phased or out-of-hours working where access allows.
Do I need to be at home for the survey in Cumbria?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
